Improvement in lamps



1.11. EVAMS.

LAMP.

Patented Dec.14,1875.

@W7/ZW UNITED STATES PATENT OFFICEa JOHN A. EVARTS, OF WEST MERIDEN,CONNECTICUT, ASSIGNOR TO THE BRADLEY 8v H'UBBARD MANUFACTURING COMPANY,OF SAME PLACE.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 171,111, dated December14, 1875 application filed October 19, 1875.

To all whom it may concern:

Be it known Athat I, J OHN` A. EVARTS, of West Meriden, in the county ofNew Haven and State ot' Connecticut, have invented a new Improvement inAttaching Lamp-Founts to Fixtures; and I do hereby declare thefollowing, wheu taken in connection with the accompanying drawings andthe letters of reference marked thereon, to be a full, clear, and exactdescription of the saine, and which said drawings constitute part ofthis specification, and represent, in

Figure l, vertical central section; Fig. 2, the lamp inverted; Fig.3,'top View ofthe l socket.

This invention relates to an improvement in the device for attachinglamp-founts to lixtures, brackets, &:c., the object being to perfectlysecure the fount, and yetallow of its easy7 removal, as for lling, te.;and it consists in constructing the lamp-fount with an annular iiange atthe bottom, with notches, and the socket with corresponding internalprojections, so that the fount may be set into the socket, the saidprojections passing through the notches, and then the fount turned tobring the ange beneath the said projections, this being an improvementupon the patent granted to Charles F. Linsley, August 31, 1875, No. 167,345, assi gn or to the assi gnees of this invention.

A is the lamp-fount, of usual construction, save at the bottom. N carthe bottom an annular groove, a, is made, and so as to form a iange, d;through this ange notches e are made, as seen in Fig. 2. B is thesocket, constructed to be screwed onto the xture, and preferably with acentral spindle, C, corresponding to a central seat, D, in the fount, as

in the said Linsley patent. This socket is of larger diameter thantheange d, and so as to inclose that ange. On this socket are internalprojections f, corresponding to the notches c in the ange of the lamp.

The fount is placed upon the socket, the

notches e passing down over the projections f in the socket, and then,by turning the fount, these projections pass over the ange, and therebyhold the fount in place.

The central spindle C serves as a guide in placing the fount upon thesocket, it being necessary that the spindle enter the seat D before theflange on the fount can strike the projections f; then simply turningthe fomit on the spindle as a center, the proper position of the notchese to the projections f is easily found, and without danger ot' tiltingthe fount.

If preferred, the projections f may be upon the fount, and the notchedtlange on the socket, it being simply reversing these parts and,therefore, when the projections f are referred to as being upon thesocket, and the notched flange upon the lamp, it is to be understoodthat they may be reversed, as before mentioned.

I claim- The combination of the socket B, constructed to be attached tothe xture, and with the central spindle C andV internal projections f,with the lainp-fount constructed with the central seat D, correspondingto the said spindle, and with the annular flange notched to correspondto the said projections, substantially as and for the purpose described.

JOHN A. EVARTS. Witnesses:

CHAs. F. LINsLEY, FRANK P. EvARTs.

